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DE???? ? ???? ??
?? 23??? ???? ? ???? ??? ??? ??? ??.
?? ???? ???? ? ???? ??? ??? ??? ??? ????: ??, ???, ????, ??, ?? ??, ??(?? ? ??).
RU-GOST R, ???? ? ???? ??
National Metrological Verification Regulations of the People's Republic of China, ???? ? ???? ??
National Metrological Technical Specifications of the People's Republic of China, ???? ? ???? ??
Hubei Provincial Standard of the People's Republic of China, ???? ? ???? ??
Professional Standard - Environmental Protection, ???? ? ???? ??
Professional Standard - Business, ???? ? ???? ??
Professional Standard - Chemical Industry, ???? ? ???? ??
GOSTR, ???? ? ???? ??
Lithuanian Standards Office , ???? ? ???? ??
CEN - European Committee for Standardization, ???? ? ???? ??
British Standards Institution (BSI), ???? ? ???? ??
Professional Standard - Agriculture, ???? ? ???? ??
Group Standards of the People's Republic of China, ???? ? ???? ??
SCC, ???? ? ???? ??
German Institute for Standardization, ???? ? ???? ??
GSO, ???? ? ???? ??
Danish Standards Foundation, ???? ? ???? ??
Spanish Association for Standardization (UNE), ???? ? ???? ??